2018 5.3 vibration in AWD mode, 2WD is fine

[al210]

I have just over 6,000 on my Z71. I decided to try AWD mode for the 1st time since it was raining.

While accelerating i can feel some shaking/vibration in the steering and pedal. Don't really notice it when coasting only accelerating.

 

I switched back to 2WD and its defiantly smoother. This don't seem normal? Why would AWD mode vibrate more?

[Sierra Dan]

This is normal. You will also hear what is a faint grinding or light whining sound.

Pretty typical of the  transfer case and front diff doing their job.

[al210]

2 hours ago, Sierra Dan said:

This is normal. You will also hear what is a faint grinding or light whining sound.

Pretty typical of the  transfer case and front diff doing their job.

Thanks for the update. I do hear some additional slight whining in this mode. Glad to know its normal but what is the difference then between AWD and 4WH on these trucks?

I thought 4WH would have the front engaged all the time while AWD would not engage the front until the rear wheels are loosing traction? Not sure what the difference is?

[Sierra Dan]

8 minutes ago, al210 said:

Thanks for the update. I do hear some additional slight whining in this mode. Glad to know its normal but what is the difference then between AWD and 4WH on these trucks?

I thought 4WH would have the front engaged all the time while AWD would not engage the front until the rear wheels are loosing traction? Not sure what the difference is?

Auto 4wd is basically on demand.

4 hi is full time 4 wheel drive until you switch back to Auto or 2wd or over to 4 low.

 

Here is a good explanation of it on another thread to this site.

 

 

 

 

[LunkerHunter]

I have a 2016 5.3. I hear absolutely no difference when in 2WD or Auto 4WD


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